<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:x="http://www.w3.org/1999/xhtml" xml:lang="en"
  lang="en">
  <head>
    <title>Test</title>
    <meta charset="UTF-8"/>
  </head>
  <body>
    <section>
      <math xmlns="http://www.w3.org/1998/Math/MathML">
        <semantics>
          <mrow>
            <mrow>
              <mo>(</mo><mi>a</mi><mo>+</mo><mi>b</mi><mo>)</mo>
            </mrow>
            <mo>&#x2062;<!--INVISIBLE TIMES--></mo>
            <mrow>
              <mo>(</mo><mi>c</mi><mo>+</mo><mi>d</mi><mo>)</mo>
            </mrow>
          </mrow>
          <annotation-xml name="contentequiv" encoding="MathML-Content">
            <apply>
              <and/>
              <apply>
                <xor/><ci>a</ci><ci>b</ci>
              </apply>
              <apply>
                <xor/><ci>c</ci><ci>d</ci>
              </apply>
            </apply>
          </annotation-xml>
          <annotation-xml name="contentequiv" encoding="application/mathml-content+xml">
            <apply>
              <and/>
              <apply>
                <xor/><ci>a</ci><ci>b</ci>
              </apply>
              <apply>
                <xor/><ci>c</ci><ci>d</ci>
              </apply>
            </apply>
          </annotation-xml>
        </semantics>
      </math>
    </section>
  </body>
</html>
